Remove algorithm property from MACContext and alias CMACContext.
Remove algorithm property from MACContext and alias CMACContext.

skeuomorf/cryptography,Hasimir/cryptography,skeuomorf/cryptography,Ayrx/cryptography,skeuomorf/cryptography,sholsapp/cryptography,bwhmather/cryptography,Ayrx/cryptography,sholsapp/cryptography,bwhmather/cryptography,Ayrx/cryptography,dstufft/cryptography,bwhmather/cryptography,dstufft/cryptography,sholsapp/cryptography,sholsapp/cryptography,Hasimir/cryptography,Ayrx/cryptography,skeuomorf/cryptography,dstufft/cryptography,kimvais/cryptography,Hasimir/cryptography,bwhmather/cryptography,Hasimir/cryptography,kimvais/cryptography,kimvais/cryptography,dstufft/cryptography,dstufft/cryptography,kimvais/cryptography